Answer:
The answer to your question is: True
Explanation:
An exothermic reaction releases heat then, it is showed as a product.
An endothermic reaction needs heat to happen, it is represented in the reactants.
Answer: Combustion is also known as burning, and the substance that burns is usually referred to fuel. The products of a complete combustion reaction include carbon dioxide (CO2) and water vapor (H2O).
Explanation:
The 
is an organ that supplies blood and nutrients to a developing embryo.
Explanation:-
- The placenta is a large temporary organ that develops in the uterus during pregnancy (in female mammals).
- Placenta allows for the exchange of materials between the mother's blood and the blood of foetus and also aid in removal of the foetus waste.
I'm pretty sure its B or C. Sorry, hope this helped some....??
